A Downward Descent                                     -      N      - 
(-------------------------------------------------)     - <---(M)---> -
                                                        -      -      -

As you approach the end of the tunnel the path continues downwards.  The
torches that light the walls seem more spaced out so less light gets into
the tunnel.  The smooth rocky ceiling screams downwards in a sharp angle. 
Like most of the other tunnels you see runes and strange writings on the
walls showing evidence of life dating far back into history.  You continue
down the path wondering where it will take you.